Date: Wed, 17 Mar 2004 17:04:22 -0500 From: John Baldwin <jhb@FreeBSD.org> To: Nate Lawson <njl@FreeBSD.org> Cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/dev/acpica acpi_cpu.c Message-ID: <200403171704.22042.jhb@FreeBSD.org> In-Reply-To: <200403172149.i2HLnl2V027784@repoman.freebsd.org> References: <200403172149.i2HLnl2V027784@repoman.freebsd.org>
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On Wednesday 17 March 2004 04:49 pm, Nate Lawson wrote: > njl 2004/03/17 13:49:47 PST > > FreeBSD src repository > > Modified files: > sys/dev/acpica acpi_cpu.c > Log: > Fix border error to allow systems that specify 100 for latency also use > C2 and 1000 to use C3. > > Submitted by: Bruno Ducrot <ducrot@poupinou.org> > Tested by: Scott Lambert <lambert@lambertfam.org> Hmm, the BIOS on my laptop uses those values when the C states are disabled (according to the BIOS text). That is, my BIOS lets me turn C2 and C3 on and off. When turned on, it uses the values 1 and 85 for the latency, and when off it uses 100 and 1000. Note that the kernel never uses C3 on this machine by the way with these latencies: hw.acpi.cpu.cx_supported: C1/1 C2/1 C3/85 -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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